Acetylene-gas mixer.



F. NORMAN.

ACETYLENE GASMIXER.

' APPLICTION FILED JUNE 24. i916. v I 5 1,217,634. rammed Feb.27,1917.

WITNESS'. IJV VEN T 0R.

By l

fs' nomma sFAfFn-s FAFnNPr oFFion.

FRANK NORMAN, OF DFS MOINES, IOWA, AssIGNoR OF FIGHT THIRTY-sFcoNDs To DOUGLAS '.r. LANDFRS, SFvRN THIRTY-SFOONDS To WILLIAM A. 'MCATFFL FOUR THIRTY-snoonns To ALFIIoNsO R. LOI-JAN, ONF THIRTY-sFcoND To WILLIAM T. sIIORFs, AND TWO THIRTY-SFOONDS Tol-GEORGE w. YOUNG, ALL OF SPRING- FIELD, MISSOURI, AND TWO THIRTY-SFOONDS,TOOLARFNOF n. NICHOLS, OF NEW YORK, N. Y.

AGE'.LYIFIEBII'IEI-GASk MIXER.

Specication of LettersV Patent.

Patented Feb. 2a, 1917.

Application led .Tune 24, 19.16. Serialo-.J1 0-5,6 0-6.-v

acetylene generating system for automobiles,

in which the acetylene system displaces or is in addition to the gasolene Supply and carlnu'eting system, although it =will be' apparent from the following description that the invention is capable of use equally as well in any acetylene 'generatingsyst'em combined with an engine ormotor, whether for the propulsion of a'vehicle or other driven mechanism. Therefore, vit 'will be understood that in describingtheinvention, I zdo not restrict myself to any single use of it, or to its embodiment in any particular combination to exclusion of others,'but it will be understood that the invention is claimed in any use and embodiment to which it may be applied.

in object of the invention is to provide a device for mixing the proper quantities of air and acetylene'gasin an acetylene generating system, including a mixing chamber and a valve controlling the admission of the acetylene gas into the chamber from the generating or supply sources of the system, in combination with an vautomatic valve controlling the admission of air into the mixing chamber as an incident to the withdrawal of the mixed air and gas from the mix-ing chamber by operation of the motor, and means v 'for varying the resistance of the valve to the pressure of the gas.

A further` Objectis to provide an improved device of th'e charactermentioned, comprising a mixing chamberhaving passages adaptedto admit the acetylene gas and also provided with passages for the admission of air, independently operating automatic valves for the gas and air passages respectively, which valves are controlled to regulate the admission of air and gas in proper quantities and proportions by and as an incident to the operation of the motor, and means for varying the resistance of said valves, equally or relatively, to maintain proper mixture under any circumstances and conditions.

Further objects will appear from the fol-v lowing description, reference being vmade to the accompanying drawing illustrating a preferred embodiment of the invention, in which- Figure l is a side elevation of an acetylene gas mixer constructed in accordance with the present invention.

Fig. 2 is a longitudinal sectional view thereof.

Fig. 3 is a sectional view on the line 8 3 of Fig-2, illustrating the air passages and the valve device controlling them.

Fig.-4is asectional view on the line 4-4 of Fig 2, illustrating the gas passages and the'valve device controlling them.

The mixer' illustrated includes a casing l which. may be in the form of a cylinder as illustrated', or of any other lpreferred design. One end of the casing is interiorly threaded, as clearlygillustrated in Fig. 2. An annular gas receiving chamber 2 is formed in the casing l by an element comprising an outer flange orpwall' and an inner flange or wall 4'united by a reduced connecting portion 5 which is located axially within the casing 1.. Thus the annular gas receiving chamber' 2 isformed within the casing l between'theV walls 3 and 4 and around the connecting portion 5. A pipe 6 communicating withj the gas generating or supply source opens into the receiving chamber 2 so that said -chamber receives a constant supplyof gas when the device is in use or operation. I The walls 3 and 4 areformed with external threads 4which engage with the threads in the casing l and thereby retain the element forming the gas receiving chamber rigidly in proper connection with the casing'l in 'which it is mounted. The outer iiange or wall 3 may be provided with recesses, illustrated at 7, with which any appropriate tool or appliance may be engaged for assembling or detaching the chamber forming element. The inner wall 4 conlstitute's one end wall of a mixing chamber 8 into which the gas is admitted from the recei ving chamber 2 through a series of passages 9 formed through the wall 4. j

The surface o'l the end wall 4 oi the mixing chamber is formed with a concave depression constituting a seat for an appropriately shaped puppet valve 10 which, when in closed position, closes the passages 9 and prevents the gas from entering the mixing chamber from the receiving chamber 2. T he valve 10 is in connection with a valve stem 11 passing through an axial opening in the connecting portion 5 and the end walls 3 and 1. The outer portion of the valve stem 11 is encircled by a coiled spring 12 oit' the expansion type, the inner end of which bears against the outer wall 3, and the outer end oic which has bearing against a plate or washer 13 which is adjustable upon the valve stem as required to vary the tension of the spring 12, in order to vary the resistance of the valve to the pressure of the gas. The adjusting device for the plate 13 comprises a nut 1st having threaded engagement with the valve stem so that by changing the position of the nut, the location of the abutment plate or washer 13 may be changed, thus varying the tension of the spring and the resistance of the valve to the pressure of the gas.

The pressure of the gas against the valve 10 through the passages 9 will open the valve in opposition to the power of the spring 12 and admit a continuing supply of the gas into the mixing chamber 8 to replace the gas which is drawn from the mixing chamber by operation of the motor or engine. rlhe outer vend of the valve rod 11 is covered by a removable cap 15 which screws into the threaded end of the casing 1 and cooperates with the end wall 3 to prevent escape or' the gas from the receiving chamber and also from the mixing chamber.

The opposite end wall 16 of the mixing chamber may also be removable, as shown, in which case it has threaded engagement with the casing 1. A series of air passages 17 opens through the end wall for admitting air into the mixing chamber' S, where it forms an admixture with the gas. A concave depression is formed inthe inner surface of the end wall 16 and constitutes a seat for the puppet valve 18 which, when' in closed position, closes the air passages 17 as illustrated in Fig. 2. rlhe valve 18 is in connection with a valve stem-19 which passes through and has bearing for axial movement in an appropriate opening in the end wall and which is encircled by a coil spring-20 of the expansion type. One end of Vthe spring 20 bears against the wall 16 and the opposite end bears against an adjustable plate or washer 21 mounted Von the valve stem and capable of adjustment thereon to vary the power or tension of the spring.20

as required to regulate the operation ol the valve. The means tor adjusting the plate or washer 21 comprises a nut 22 thr aded upon the end of the valve stem and capable of adjustment thereon to change the position of the plate or washer 21 as required to vary the tension of the spring, in order to vary the resistance of the valve to the pressure of the air.

The admixture from the mixing chamber 8 is conducted to the manifold of an engine or motor through a passage 23. The supply of gas into the receiving chamber, and consequently to the mixing chamber and to thc engine or motor, is controlled by a throttle valve 24E in the pipe 6. rlhe throttle valve is of theusual and well known automatic closing type the details of which are no part of the present invention and require no detailed illustration and may be opened by the usual manipulative throttle connections Vhat I claim and desire to secure by Letters Patent of the United States, is

1. An acetylene gas mixer, comprising a casing, an inner wall secured within the casing intermediate of the ends thereof, an outer wall secured within the casing intermediate of the endsthereof, a gas receiving chamber within the casing whose walls are the casing and said inner and outer walls, an end wall secured to the casing, a mixing chamber within the casing between the end wall and the inner wall, passages from the receiving chamber through the inner wall into the mixing chamber, a puppet valve controllingsaid passages, a stem in conn-ection with said valve extending through said inner and Youter walls, a spring normally retaining said puppet valve in position to close saidp'assages and arranged to yield under the pressure of the gas against said valve to enable thc gas to enter the mixing chamber, passages through said end wall for admitting air into said mixing chamber, a puppet valve controlling the air passages, and a spring normally retaining the last-named puppet valve in position to close the air passages and arranged to yield under pressure ofthe air against said valve to enable the airV to enter the mixing chamber.

2. An acetylene gas mixer, comprising a casing, two walls removably mounted transversely within said casing and having their edges in connection therewith, an axial connection betweensaid walls, a gas receiving chamber in'said casing between said walls and around said connection, a mixing chamber in said casing, passages from said receiving chamber through one of said walls to said mixing chamber, a puppet valve controlling said passages, a stem in connection close said passages and arranged to yield under the pressure of the gas against said valve to enable the gas to enter the mixing chamber, an adjustable abutment for said spring on said valve stem for varying the tension of said spring and thereby the resistance of said valve against the pressure of the gas, passages for admitting air into said mixing chamber, a puppet valve controlling said air passages, and a spring normally retaining said last-named puppet valve in position to close said air passages and arranged to yield under the pressure of the air against said valve to enable the air to enter the mixing chamber.

3. An acetylene gas mixer, comprising a casing, a gas receiving chamber in said casing, an outer transverse Wall removably mounted in said casing, an inner transverse wall Within said casing spaced from and integrally connected to said outer Wall, an end Wall in connection With the casing, a mixing chamber in said casing formed by said inner and endWalls and the Wall of the casing, passages from said receiving chamber through said inner Wall to said mixing chamber, a puppet valve controlling said passages, a valve stem in connection With said valve extending through said Walls, a spring encircling said stem bearing against said outer Wall and normally retaining said puppet valve in position to close said passages and arranged to yield under the pressure of the gas against said valve to enable the gas to enter the mixing chamber, means for varying the tension of said spring and thereby the resistance of said valve against the pressure of the gas, a puppet valve controlling said air passages, a spring normally retaining said last-named puppet valve in position to close said air passages and arranged to yield under the pressure of the air against said valve to enable the air to enter the mixing chamber, and means for varying the tension of said last-named spring and thereby the resistance of the second-named puppet valve against the pressure of the air.

l. An acetylene gas mixer, comprising a casing; an element, removably mounted in said casing, comprising an inner Wall, an outer Wall and an axial connection uniting said Walls; a gas receiving chamber formed between said inner and outer Walls Within the casing around said connection; a passage for admitting gas into said chamber; a mixing chamber within said casing; a series of passages from said receiving chamber into said mixing chamber; a valve controlling said series of passages; a valve stem in connection with said valve extending through said inner and outer Walls and through said connection; a spring encircling said valve stem and arranged to hold said valve in position to close said series of passages and to yield to the pressure of the gas; a device for varying'the tension of said spring to vary the resistance of the valve against the pressure of the gas, airinlet passages opening into said mixing chamber, and means for controlling the passage of air through said passages.

5. An acetylene gas mixer, comprising a casing; an element, removably mounted in said casing, comprising an inner Wall, an outer Wall and an axial connection uniting said Walls; a gas receiving chamber formed between said inner and outer Walls Within the casing around said connection; a passage for admitting gas into said chamber; a mixing chamber Within said casing; a series of passages from said receiving chamber into said mixing chamber; a valve controlling said series of passages; a valve stem in connection with said valve extending through said inner and outer Walls and through said connection; a spring encircling said valve stemV and arranged to hold said valve in position to close said series of passages and to yield to the pressure of the gas; a device for varying the tension of said spring to vary the resistance of the valve against the pressure ofthe gas; andpassages for admitting air into said mixing chamber.

6. An acetylene gas mixer, comprising a casing; an element, removably mounted in said casing, comprising an inner Wall, an outer Wall and an axial connection uniting said Walls; a gas receiving chamber formed between said inner and outer Walls Within the casing around said connection; a passage for admitting gas into said chamber; a mixing chamber Within said casing; a series of passages from said receiving chamber into said mixing chamber; a valve controlling said series of passages; a valve stem in connection with said valve extending through said inner and outer Walls and through said connection; a spring encircling said valve stem and arranged 'to hold said valve in position to close said series of passages and to yield to the pressure 'of the gas; a device for varying the tension of said spring to vary the resistance of the valve against the pressure of the gas; passages for admitting air .into said mixing chamber; a puppet valve controlling said air passages; and a spring for holding said'puppet valve in closed adjustment and arranged to yield to the pressure of the air to admit air into the mixing chamber as an incident to the Withdrawal of the mixture from said chamber.

7. An acetylene gas mixer, comprising a casing; an element, removably mounted in said casing, comprising an'inner transverse Wall, an outer transverse Wall and a connection Iuniting said Walls; a gas receiving chamber formed by said Walls and the Wall of the casing; a passage opening into said casing between said inner and outer Walls for admitting gas into said chamber; a mixing chamber within said casing; a recess constituting a valve seat in the side of the inner wall in said mixing chamber; passages from said receiving chamber into said recessed valve seat; a valve movable into and out of said valve seat for controlling said passages; a valve stem in connection with said valve extending through said walls and through said connection; a spring encircling said valve stem and arranged to hold said valve in said valve seat to close said passages and to yield to the pressure of the gas; a device for varying the tension of said springl to vary the resistance of the valve against the pressure of the gas; a cap inclosing said spring and device and engaging said casing; passages for admitting air into said mixing chamber; a puppet valve controlling said air passages; a spring fo'r'holding said puppet valve in closed adjustment and arranged to yield to the pressure of the air to' admit air into the mixing chamber as an incident to the withdrawal of the mixture from said chamber; and means for varying the tension of said last-named spring to vary the resistance of the valve against the pressure of the air.

8. An acetylene gas mixer,'comprising a casing; an element incased within said casing comprising inner and outer walls having their edges in engagement with the casing and forming a closed receiving chamber within the casing between said walls; a connection between said walls; a mixing chamber' within said casing; a series of passages through the inner wall of said element for admitting gas from the receiving chamber into the mixing chamber; a puppet valve for opening and closing said series of passages; a spring arranged to hold said valve in position to close said series of passages and to yield to the pressure of the gas within the receivingchamber as an incident to the withdrawal of the gas from the mixing chamber; passages for admitting air into the mixing chamber; a valve controlling said air passages and arranged to yield to the pressure Copies of this patent may be obtained for nar/,634

of the air to admit air into the mixing chamber; a spring for holding said lastnained valve in position to close said air passages; and means for varying the tension of said spring to vary the resistance of said valve against the pressure of the air, whereby the relative quantities of air and gas entering said mixing chamber may bevaried.

9. An acetylene gas mixer, comprising a casing; an element incased within said casing, comprising inner and outer walls having their edges engaging the wall of the casing and forming a closed gas receiving chamber between them; an axial connection between said walls; a. mixing chamber within said casing around said connection; passages fromv said receiving chamber into said mixing chamber; a valve for controlling said passages; a spring arranged to hold said valve in positionl to close said passages against the pressure of the gas and to yield to the pressure of the gas against said valve; a passage for admitting gas into said receiving chamber; passages for admitting air into said mixing chamber; a valve controlling said air pas-sages; a valve' stem in connection with said last-named valve; a spring encircling said'valve stem and arranged to hold said valve in position to close said air passages and to yield to the pressure of the air to enable air to enter saidinixing chamber as an incident to? the withdrawal of gas and air from said mixing chamber; a passage tor withdrawing` the mixed air and gas from said mixing chamber; and means for varying Y relatively the tension V of said springs whereby relative' quantities of air and gas entering said mixing chamber may be optionally varied.

In witness whereof, I have signed this speciiication in the presence of two subscribing witnesses.-

FRANK NORMAN.

litnesses Ci-IAs.` MCKNOLLY, GLADYS DAILY.

ve cents each, by addressing the Commissioner of Patents, Washington, D. C. 

